linux-kernel - [PATCH] i2c: s3c2410: make i2c_s3c_irq

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Date:   Tue, 28 Apr 2020 14:31:38 +0800
From:   Jason Yan <yanaijie@...wei.com>
To:     <kgene@...nel.org>, <krzk@...nel.org>, <wsa@...-dreams.de>,
        <linus.walleij@...aro.org>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-samsung-soc@...r.kernel.org>, <linux-i2c@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     Jason Yan <yanaijie@...wei.com>
Subject: [PATCH] i2c: s3c2410: make i2c_s3c_irq_nextbyte() void

Fix the following coccicheck warning:

drivers/i2c/busses/i2c-s3c2410.c:391:5-8: Unneeded variable: "ret".
Return "0" on line 552

Signed-off-by: Jason Yan <yanaijie@...wei.com>
---
 drivers/i2c/busses/i2c-s3c2410.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 5a5638e1daa1..22315d8f616f 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -136,7 +136,7 @@ static const struct platform_device_id s3c24xx_driver_ids[] = {
 };
 MODULE_DEVICE_TABLE(platform, s3c24xx_driver_ids);
 
-static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat);
+static void i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat);
 
 #ifdef CONFIG_OF
 static const struct of_device_id s3c24xx_i2c_match[] = {
@@ -384,11 +384,10 @@ static inline int is_msgend(struct s3c24xx_i2c *i2c)
 /*
  * process an interrupt and work out what to do
  */
-static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
+static void i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
 {
 	unsigned long tmp;
 	unsigned char byte;
-	int ret = 0;
 
 	switch (i2c->state) {
 
@@ -549,7 +548,7 @@ static int i2c_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat)
 	tmp &= ~S3C2410_IICCON_IRQPEND;
 	writel(tmp, i2c->regs + S3C2410_IICCON);
  out:
-	return ret;
+	return;
 }
 
 /*
-- 
2.21.1